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. e e h S .w e e h S 3 R E L L U M H d o. M o m DYNAMO ELECTRIC MACHINE.

Patented Dec. 1, 1885.

n PETERS, Mun-"w. Washington. 0.1:. I

3 Sheets Sheet 3.

(No Model.)

H. MULLER.

DYNAMO ELECTRIC MACHINE.

Patented Dec. 1', 1885.

- UNITED STATES PATENT OFFICE.

HERMANN MULLER, OF ZURICH, ASSIGN OR TO THE \VERKZEUG UNI)-MASCHINFNFABRIK OERLIKON, OF OERLIKON, NEAR ZURICH,

SWVITZERLAND.

DYNAMO-ELECTRlC MACHINE.

SPECIFICATION forming part of Letters Patent No. 331,726, dated December1, 1885.

Application filed July 3, 1885.

To all whom it may concern:

Be it known that I, HERMANN MULLER, a citizen of WVinterthur, residingat Zurich, in the canton of Zurich and State of Switzerland, haveinvented certain new and useful Improvements in the disposition of theconductor system of multipolar dynamdmaehines and its practicalapplication; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to letters orfigures of reference marked thereon, which form a part of thisspecification.

This invention relates to multipolar dynamo-electric machines; and itconsists in the detailed construction of the armature and conductors, ashereinafter fully described and claimed.

In the drawings, Figure l is a diagram showing the arrangement of theconductors and commutator with four magnetic fields of alternatingpolarity. Fig. 2 is a diagram showing the arrangement of the conductorsand commutator with ten magnetic fields of alternating polarity. Fig. 3is a diagram showing the motion of the induced parts of the conductorsrelative to the axes of the poles. Figs. 4 and 5 are also diagramsshowing the motion of more complex systems of induced parts relative tothe axes of the poles. Fig. 6 is an end view of a cylindrical dynamohaving its armature constructed according to this invention. Fig. 7 is alongitudinal vertical section through the center of the same. Fig. 8 isan end view, partly in section, of a disk-dynamo having its armatureconstructed according to this invention. Fig. 9 is a longitudinalvertical section through the center of the same.

Similar letters of reference indicate corre sponding parts in all thefigures.

The conductors in the armature form one continuous course havingbranches leading off to the connnutator or collector O, and the inducedcurrent flows through the entire sys- Serial No. 170,613. (No model.)

always conforms to the condition 1 d:ii l) when u=average circumferenceof armature. n number of segments of the collector O. p=any equal numberof field-magnets not less than four.

The collector G is made, as usual, of a number of insulated metallicsegments, which are connected with the elements of the continuousconductor of the armature, as shown by the dotted lines in Figs. 1 and2. Supposing the circumference a to be divided into a number of equalparts=n, and that 10- 1, then it follows that 14:11, and equation 1takes the following form:

2 d -mfl 1 and from this 3 n clpll.

From these equations it follows that for each circumferentialprogression or advance (I of the conductor elements a b (of simple orcomplex form) a successive displacement takes place relatively to theaxes of the magnetic fields, as shown in Fig. 3, and that this displacement may either be a lead or a retrogression, as preferred. Thecircumferential distance between two succeeding field-maga a nets bemgequal to -o1 the average value 0 p D of the displacement (lead orretrogression) will therefore be for each progression or advanceof a b 413:61- 19 and substituting herein the value of d from equation 2, we getso that after 1) progressions the total lead or retrogression will be 6pD il.

The conductors of an armature constructed or wound according to the lawslaid down in the foregoing equations will result in an end less orcontinuous system ofoonductors which, when rotated in the magneticfields of any equal number of magnets not less than four, will produce acontinuous electrical current.

In Figs. 6 and 7 an armature constructed as hereinbefore described isshown applied to a cylindrical dynamo-macl'iine.

I11 Figs. 8 and 9 the armature is shown applied to a disk-machine inwhich the main frame consists ofa cylindrical shell, M, havingholding-down lugs or feet R R.

E and E are removable end plates, to which the field-magnets N and S areattached. E has the bearing L for the driving-shaft formed integral withit. E has the bearing L for the driving-shaft formed integral with italso.

0 is the commutator or collector.

Having thus described my invention, what I claim as new,and desire tosecure by Letters Patent, is-

In a multipolar dynamo-machine, an armature having the conductorswoundupon it in one continuous course, so that the distance between each twosuccessive induced portions of the conductors is greater or less thanthat between the poles of the field-magnets according to the formula D=dn or D -d,

.2 l substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

H ERM ANN M ULLER.

\Vitnesses:

CHARLES BROWN, WILLIAM SCHNEIDER.

